Simultaneous Nadir Overpasses (SNOs) Predictions
Prediction of SNOs between NOAA-20 and LANDSAT-9 Satellite Orbit:
Table of predicted SNOs for the next 14.0 days since TLE Epoch: 7/20/2025
| Index | Date (NOAA-20) | Time (NOAA-20) | Lat,Lon (NOAA-20) | SZA (NOAA-20 ) | Date (LANDSAT-9) | Time (LANDSAT-9) | Lat,Lon (LANDSAT-9) | SZA (LANDSAT-9 ) | Distance(km) | Time Diff (sec) |
| 1 | 07/21/2025 | 07:10:10 | 70.00, 68.64 | 49.60 | 07/21/2025 | 07:10:38 | 69.97, 68.62 | 49.57 | 3.03 | 28 |
| 2 | 07/21/2025 | 08:00:51 | -69.88,-123.86 | 130.53 | 07/21/2025 | 08:00:08 | -69.86,-123.90 | 130.53 | 2.18 | 43 |
| 3 | 07/23/2025 | 22:36:25 | -70.37, 16.54 | 129.48 | 07/23/2025 | 22:37:37 | -70.26, 17.27 | 129.63 | 29.79 | 72 |
| 4 | 07/23/2025 | 23:27:04 | 69.97,-175.54 | 50.11 | 07/23/2025 | 23:27:07 | 69.99,-175.48 | 50.12 | 3.04 | 3 |
| 5 | 07/24/2025 | 00:17:45 | -69.85, -8.04 | 130.02 | 07/24/2025 | 00:16:38 | -69.83, -8.07 | 130.02 | 2.35 | 67 |
| 6 | 07/26/2025 | 14:53:14 | -70.02, 132.84 | 129.26 | 07/26/2025 | 14:54:11 | -70.05, 132.84 | 129.25 | 2.36 | 57 |
| 7 | 07/26/2025 | 15:43:59 | 69.95, -59.73 | 50.67 | 07/26/2025 | 15:43:38 | 69.93, -59.68 | 50.65 | 2.58 | 21 |
| 8 | 07/26/2025 | 16:34:28 | -69.18, 108.70 | 130.13 | 07/26/2025 | 16:33:19 | -69.23, 107.00 | 130.01 | 67.19 | 69 |
| 9 | 07/29/2025 | 07:10:09 | -70.00,-111.35 | 128.67 | 07/29/2025 | 07:10:42 | -69.98,-111.37 | 128.69 | 2.51 | 33 |
| 10 | 07/29/2025 | 08:00:53 | 69.87, 56.15 | 51.21 | 07/29/2025 | 08:00:09 | 69.86, 56.11 | 51.21 | 1.97 | 44 |
| 11 | 07/31/2025 | 22:36:27 | 70.33,-163.40 | 52.33 | 07/31/2025 | 22:37:39 | 70.21,-162.79 | 52.18 | 26.10 | 72 |
| 12 | 07/31/2025 | 23:27:04 | -69.98, 4.46 | 128.03 | 07/31/2025 | 23:27:12 | -69.95, 4.47 | 128.06 | 3.09 | 8 |
| 13 | 08/01/2025 | 00:17:48 | 69.86, 171.95 | 51.85 | 08/01/2025 | 00:16:39 | 69.83, 171.95 | 51.83 | 2.58 | 69 |
Figure of NOAA-20 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 7/20/2025
Download SNOs between NOAA-20 and LANDSAT-9 since TLE EPOCH: 07/20/2025 in txt file.
Historial Predications of SNOs between NOAA-20 and LANDSAT-9